Electric cut-out.



`T. E. MURRAY.

ELECTRIC GUT-OUT.

APPLIOATIONVFILED 00T. 17,1908.

Patented Apr. 13, 1909.

2 SHEETS-SHEET 1. 5| 5( wu@ who@ a @Htc/wieg Y T.l E. MURRAY. ELECTRIC GUT-GUT.

APPLICATION FILED 00T. 17,1908.

2 SHEETS-SHEET 2.

Patented Apr. 13, 1909.

' THOMAS E. MURRAY, or NEW YORK, N. Y..

ELECTRIC. GUT-OUT.

Specification of Letters Patent.

Patented April .13, ,1909.

Application med october 17, 190s.- seria-ino.45t-,199..l

To all whom it 'may concern:

. Be it known `that LTiioMAs E. MURRAY, a citizenof the United States, residing at New York, inthev county of New Yorkland State of'Ne'iv York, have invented a certain new and useful Improvement in Electric Cut- Ou-ts, of Which'tlie following is a specification.

The invention relates to electric cut outs' and consists in a fuse case having tWo connected plugs' containing fuses, eacl plug being provi-ded on itsexterior with a pair of circuit terminals .connected tothe fuse, the pairof terminals'on one plug being disposed atan angle to the terminals on the other luv" also inthe combination in-"an'electric cut out, of va .holder having a socket and circuit vterminals therein, of a fuse case having tivo fuses and a pair of circuit terminals connecting With eachfuse, Athe said fuse casev the position of said case; also in the combi.

nation of a fuse case holder and locking device'for retaining said casein a socket in said holder, the construction being such as to per-v mit thefusecase to be withdrawn from said socket sufficiently to break circuit to said fuseV Without releasing said lock; and also the various combinations more particularly pointed outin'the claims.

In-the accompanying draWings-Figure 1 is a plan ViewY of my improved electric cut out, partof the cover vbeing Abroken away.v

F ig. 2 'is a section on the linev y, y, of Figfl.

Fig. 3 isa section on the line sc, of Fig. 11. Fig. 4 is an-elevatioii of the fuse case, showing the parts holding the fuse cylinders inA section. Fig. 5 fshows the. contact plate, separately and in. perspective. Fig-. 'is-a bottom view of the fuse case. aFig. ".7 is a longitudiiiif4 section of the' fuse'cylii'ider.

Fig. 8 isa diagram showing the connections, and also'tlie' fuse cases in ldifferent positions. Similar 'numbers' and letters of reference indicate like' parts:

A is the holder or `base block, referably made. of porcelain, proyided with tlir'ee chan-A nels on its'upper. side for the reception of the.

main conductors,.a,' l), c, of a 4.three Wire'syse.

tem. On' the underside' of the block Aare re-' cesses `for the reception-ofthe metal strips` d, e, f, Wliich-areconnected respectivelyjto the mains a, 21,0 by clips g in the usual Way,-; i and which communicate on opposite sides o" the base block with the terminals of two local Wiring systems h, t, j, andlf, 1,5m. Iii' each local system is disposed a fuse case C-'or f D and suitable connections, and as said fuse cases Cor D Withassociated parts are alike; a description of one applies to both.

Eachuse case, as D, consists oftwo fuse plugs 1, 2, united by an-arched connecting:

-piece 3 Which may be integral with said plugs the entire case being preferably made of porce' lain. Each` plug has, on opposite sides of its exterior, two contact plates, namely, 4,5

on plug 1, and 6,-' 7 on plug 2. The' plates 4, 5, of plug 1 are placed atriglrt angles to the plates 6, 7 of plug 2. The pliigs-l, 2 may be four-sided or preferably cruciform in cross section, as shown in Fig. 6, with the contact plates 4, 5, 6, 7 secured-by bending their edges over the corners' of the cross arms.

a cylindrical opening in each plug is inserted a fuse cylinder E,'Fig. 7,'comprising a tube 8-` of porcelain, metal caps 9, 10, a fuse 11 connected at its ends to said caps, and a lilling vof incombustible:'pulverized materia-l.. in which the fuse is embedded. 0n cap 410 isa flanged i projection 12, Which may be conveniently grasped in order to Withdraw the fuse from the plug,r as shown dotted lines, Fig. 4." The fuse cylinder E1 is inserted inthe-plug openi-nguntil the upper cap9 meets a contact plate 13, 'Fig'. 4, which is connected', 'by a strip 14 passing through an inclined passage@ inthe Wall of the plug, to contact late'y 7.v

jection (dott-ed lines, Fig.- 4)'byunwrapping" it therefrom before the removal of the plig."

O n the connecting .piece 3 of 'thefise case are flanges 16,I and in 'the body thereof is an o ening O, the purpose offwliichwillbe-exp ained hereafter." l

In the holder orbase lplatey A are sockets'F; G, into which thefplugsl, 2' respectively rit when thefusecase C is iiiplace: At the bot-- tomof socket Gr' is a contant plate 'H ha ing;

oa horizontal portion .18,.Figf 2, adou led* over portion. 19,"and`averti'cal portion 20,v

To the .doubledI over portionV is .secured-v a terminal of local conductor Abovefthe:

horizontal portion is an'insulatingdis'k 215* and then the horizontal portion 22 of a bent contact plate I, the vertical portion 23 of which is disposed opposite to the vertical portion of contact plate H. Above the horizontal portion 22 of contact plate I-is a contact disk 24; -The contact disk 24, plates H, I, and disk 21 are secured together by a screw whichpasses through the bottom of the holder, an ducting strip d. The o ening 25, in the horizontal portion 18 of plate H, is enlarged so that the fastening screw does not make contact with said plate. The arrangement of the corres onding parts in socket F is the same, with) the exception that the vertical portions 26, 27 of the contact plates J, K are set at right angles to the vertical o rtions 20 and 23 of the contact plates H, To' ermit this, the lower contact plate J isvma e as shown in Fig. 5, with a side projection 28 on its horizontal ortion, to which projection the terminal ofp local conductor c is secured.

It will be apparent, that the relative positions of the vertical portions of the pairs of contact lates H, I, and J, K in the sockets engages with con- F, G is t e same as that ofthe pairs'of contact plates 4, 5`and 6, 7 on the connected plugs 1, 2. The pair of vertical lates in socket F forms, in fact, a clip whic stands at right angles to the similar pair of vertical plates also forming a clip in socket G. "If,

"therefore, the plug 1 be inserted in socket F e tact with the condition is s and the plug 2 in socket G, then the contact plates 4, 5 on plug 1 will not make contact with the plates J, K in socket F, and the contact plates 6, 7 on plug 2 will not make conplates H, I, in socket G. This own on the right of the diagram, Fig. 8. If the plug 1 be inserted in socket G and the plug2 in socket F, then the contact lates 4, 5 on lug 1 will make contact wit the plates H, in socket G, and the contact lplates 6, 7 on plug 2 will make contact wit the contact p ates J, K in socket F. This condition is shown on the left of the diagram, Fig. 8. Hence, local circuit in the conductors c, l, m may be made or broken by lIrojecting upward romthebase or holdersimplyinsertingthe plugs in the 'sockets in one Way or the other. If plug 1 is in socket G and lu 2 in socket F, circuit is com leted throu t e fuses. If plug 1 is in soc et F and p u 2 in socket G, circuit is broken. To make t e change, it is simply necessary to remove the fuse case and turn it end for end.

` 'U11 the case may be an arrow L, which, when the pllugs are in position to close circuit through e fuses, may point to the word on inscribed on-the cover M of the holder Whenthe case A, as shown in Fig. 1. reversed, the arrow 1s reversedhas shown 1n A, and recelved in recesses of the cover M,

arejugs N having o enings 29. Said open ings, 29, are in line wlith the openings 0 in the fuse cases C, D, so that a headed rod I" may be assed through all of said openings. VThe wit drawal of said rod is prevented by assing the shackle of any suitable sea Q, through an opening near its end. Thisv rod locks the fuse cases C, D and also the cover M, upon which the ianges 16 of said cases bear, in place in and on the holder A, and said rod is, of course, removed before a fuse case is reversed to make or break circuit. It is possible to make or break circuit in either local circuit in another Way, and without releasing the lockingrod. The openings 29f 'in the lugs N are made greater in vertical height than the openings O in the fuse cases, see Fig. 2, so that it is possible to raise said cases or either of them (the rod then rising in openings 29) for a sufficient distance to permit the projections 12 to be separated from the plates 24. The fuse case is held thus raised by the friction ofthe plugs in the clips formed by the fixed contact plates in the sockets. It will be obvious, that instead of enlarging the openings in the lugs N, I may enlarge the opening O in the fuse cases to give to the latter the vrequisite, upward play to permit of similar separation of the contacts.

I claim:

1. In a fuse case, two plugs, a connecting piece between'said plugs, a pair of oppositely dis osed `contact plates on the exterior of eac lug, thepair of contact plates on one plug being at an angle to the contact plates on the other plug, and a fuse in eaeh plug connectedat its ends respectively to the contact plates on said plug.

2. In a fuse case, two plugs, a connecting piece between said plugs, two removable fuse cylinders having contact plates at their opposite ends disposed in said lugs, a pair of oppositely placed contact p ates on the eX- terior of each plug, and connections from the ends of each fuse cylinder to its associated contact plates: the pair of contact plates on one of said plugs being disposed at an angle to the contact plates on the other plug.

3. In a fuse case, two plugs disposed relatively parallel to one another, a connecting piece extending between said plugs and hava transverse opening, two removable fuse grinders having contact plates at their opposite ends disposed in sald lugs, a pair of `oppositely placed contact plhtes on the exterior of each plug, and connections from the ends of each fuse cylinder to its associated contact plates: the pair of contact plates on one of said plu being disposed at an angle to the contact p ates on the other lug.

4. In an electriccut out, a holder having two sockets and circuit terminals therein, and a fuse case having two fuses and a air of circuit terminals connecting with eac fuse: thesaid fuse case being reversible to permit either fuse and its associated terminals to be introduced into either socket, and .the said llO Y case ingsaid holder.

' 'releasing the said lock.

` and a fuse case having twouses and a pair `fuse: the saiduse case being reversible to permit either fuse and Ais made or broken in accordance with the polopening being of a size to permit said. fuse socket terminals and the said fuse terminals being relatively dis osed at right angles so that circuit througii said fuses is made or broken in. accordance with the position ol said case.

5. In an electric cut out, a holder having two sockets and circuit terminalstherein,

of circuit terminals connecting with each its associated terminals to be introduced into either socket, and the 1 said socket terminals and the said fuse terminals being *relatively disposed at right angles so that circuit through said fuses is made or broken in accordance with the position of said casezand means for locking said 6. In an electric cut out, a holder having two sockets and circuit terminals therein, ause case having two fuses and a pair of`circuit terminals connecting with each fusethe said fuse ease being reversible to permit either fuse and its associated terminals to be introduced into either socket, and the said socket terminals and the said fuse terminals being relatively dis osed at right angles so that circuit throng said fuses is made or broken in accordance with the position of said case z-and means for locking the case in either position in said holder.

7. ln an electric cut out, a holder having. two sockets and circuit terminals therein, a cover for said holder having openings above said sockets, a fuse ease having two fuses and a pair of circuit terminals connecting with each fuse :-the said fuse case beingreversie to permit eitherl fuse and its associated terminals to be introduced into either socket, andV the said socket terminals and the said fuse terminals beingrelatively disposed at right angles so that circuit through said fuses sition of said casa-and means for locking said case in, and said cover-on, said holder.

8. lIn an electric cut out, a holder having a socket and' circuit terminals therein, a fuse case having a fuse and circuit terminals connecting therewith, said fuse terminals being l constructed to contact with said circuit terminals upon the insertion of said fuse case in said socket, and a locking device for retaining said fuse case in said socket, and assing through an opening in said fuse case, t e saidr case to be withdrawn from said socket Sulliciently to break circuit to said fuse without 9. In an electric cutout, two fuse plugs, each having a pairof contact plateson its exterior, a use. in each plug having its terminals connected to its associated pair of con` tact plates, a connecting piece between said plugs having an opening, a holder, two sock- -and a locking bar extending` through said openings in said lugs and said fuse case: the openings in said lugs and the openings in said fuse case being drelatively so proportioned as to permit `the fuse plugs to be withdrawn from said sockets sufficiently to break circuit without removing said locking bar.

- 10. In an electric cut out, a fuse case comprising two connected plugs and fuses there- 1n, and contacts on the exterior of said plugs, in combination with a holder having sockets to receive said plugsLand contacts in said sockets: the aforesaid plug contacts and socket contacts being disposed relatively at right angles so'that when said fuse case is disposed in one position, and said plugs are inserted in said sockets, circuit is made to said fuses, and when said fuse case is turned end for end in the reverse position, and the plugs are then inserted in said sockets, circuit is broken to said fuses.

1l. In an electric cut out, a holder having I two sockets, a pair of contact plates oppositely disposed 'on the walls of each socket, the contact plates in one socket being at right angles to the contact plates in the other socket, two plugs disposed relatively parallel and constructed to enter said sockets, a connecting ieee between said plugs, a pair of opposite y disposed contact plates on the exter1or of each plug, the pair of contact plates on one plug being at right angles to the contact plates on theother plug, and a use 1n each plug connected at its ends respectively tothe pair of contact plates on said pllug 12. In` an electric cut out, a holder aving two sockets, a pair of contact plates disposed on the wall of each socket, two plugs constructedto enter said sockets, a air of contact plates on the exterior of eac plug, and in each plug a fuse having its ends connected to the contact plates on said plugs: the aforev said plug contacts and socket contacts being disposed relativelyY at right angles so that when said fuse case is disposed in one position, and said plugs are inserted in said sockets, contact is made between said plug contact plates and said socket contact plates, and when said case is turned end for end in the reverse position, and said lplugs are then inserted in saidsockets, contact is broken between said plug ,contact plates and said socket contact plates. A

In testimony whereof I have affixed my signature in presence 'of two witnesses.

THOMAS E. MURRAY. Witnesses:

GERTRUDEy T. PORTER, MAY, T. MCGARRY. 

